移动硬盘由于供电和数据传输均通过USB接口，可能会由于设备供电不足或线路过长而导致电流不足无法识别设备的情况，出现反复断连的情况，所以我对传输线进行了修改，现在家里一般都会有USB移动充电宝，我的设想是将移动硬盘的传输线中的电源单独通过USB移动充电宝供能，实际效果看下图

Since the power supply and data transmission of the mobile hard disk are all through the USB interface, the current may be insufficient to identify the device due to insufficient power supply or the line is too long, resulting in repeated disconnection, so I modified the transmission line. Everyone will have a USB mobile power bank. My idea is to supply the power in the transmission line of the mobile hard disk through the USB mobile power bank alone. See the picture below for the actual effect.